Replace zest.releaser with RELEASE_PROCESS.md

- Remove [tool.zest-releaser] section from pyproject.toml
- Remove zest.releaser and check-manifest from tests/requirements.txt
- Add RELEASE_PROCESS.md documenting the setuptools-scm release flow
- Add MANIFEST.in to exclude RELEASE_PROCESS.md from sdist

Author: graingert

MANIFEST.in

@@ -0,0 +1 @@
+exclude RELEASE_PROCESS.md

RELEASE_PROCESS.md

@@ -0,0 +1,60 @@
+# Release Process
+
+unittest2pytest uses [setuptools-scm](https://github.com/pypa/setuptools-scm)
+for version management. Versions are derived automatically from git tags.
+
+## Cutting a Release
+
+1. **Create a release branch:**
+
+   ```
+   git switch -c release-X.Y.Z main
+   ```
+
+2. **Update `CHANGELOG.rst`:**
+
+   Replace `UNRELEASED` with the version and date:
+
+   ```rst
+   X.Y.Z
+   -----
+
+   *YYYY-MM-DD*
+   ```
+
+   Add a new unreleased section at the top:
+
+   ```rst
+   UNRELEASED
+   ----------
+
+   *UNRELEASED*
+   ```
+
+3. **Commit and push:**
+
+   ```
+   git commit -am "Prepare release X.Y.Z"
+   git push origin release-X.Y.Z
+   ```
+
+4. **Open a PR and wait for CI to pass.**
+
+5. **Tag and publish:**
+
+   Once the PR is green and approved, run:
+
+   ```
+   gh workflow run deploy.yml -R pytest-dev/unittest2pytest \
+     --ref release-X.Y.Z --field version=X.Y.Z
+   ```
+
+   This will build, test, publish to PyPI, create a GitHub release,
+   and merge the PR.
+
+## How Versioning Works
+
+- Tagged commits (e.g. `v0.6`) produce version `0.6`.
+- Commits after a tag produce dev versions like `0.7.dev3+gabcdef`.
+- The version is written to `unittest2pytest/_version.py` at build time.
+  This file is git-ignored and should not be committed.

pyproject.toml

@@ -47,8 +47,3 @@ readme = {file = ["README.rst", "NEWLINE.rst", "CHANGELOG.rst"], content-type =
 [tool.setuptools_scm]
 version_file = "unittest2pytest/_version.py"
 
-[tool.zest-releaser]
-push-changes = false
-tag-format = "v{version}"
-tag-message = "unittest2pytest {version}"
-tag-signing = true

tests/requirements.txt

@@ -2,9 +2,7 @@
 pytest >= 3.3.0  # Testing framework.
 
 # Helper tools
-zest.releaser # Makes releasing easier
 wheel  # For creating .whl packages in Appveyour to avoid compiling again.
-check-manifest  # Checks MANIFEST.in
 pyroma  # Checks if package follows best practices of Python packaging.
 chardet  # character encoding detector.
 readme  # Check PYPI description.